1251461 has 2 divisors, whose sum is σ = 1251462. Its totient is φ = 1251460.

The previous prime is 1251433. The next prime is 1251463. The reversal of 1251461 is 1641521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1020100 + 231361 = 1010^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 1251461 - 2¹⁰ = 1250437 is a prime.

Together with 1251463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1251463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625730 + 625731.

It is an arithmetic number, because the mean of its divisors is an integer number (625731).

2^1251461 is an apocalyptic number.

It is an amenable number.

1251461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251461 is an equidigital number, since it uses as much as digits as its factorization.

1251461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 1251461 is about 1118.6871770070. The cubic root of 1251461 is about 107.7636865491.

Adding to 1251461 its reverse (1641521), we get a palindrome (2892982).

The spelling of 1251461 in words is "one million, two hundred fifty-one thousand, four hundred sixty-one".